This Practice Note deals with the different rights used by businesses to protect against unfair business practices. It deals with legislation and regulation, misleading advertising, comparative advertising, the relationship between the Business Protection from Misleading Marketing Regulations 2008 (BPR 2008) and the Trade Marks Act 1994, offences, enforcement, the advantages and disadvantages of BPR 2008, passing off and alternatives to an action under BPR 2008 or passing off.